24LC512T-E/ST14

Memory IC Overview

The Microchip Technology 24LC512T-E/ST14 is a 512 Kbit (64K x 8) serial electrically erasable PROM. It operates on a single supply voltage ranging from 2.5V to 5.5V and supports I²C compatible two-wire serial interfaces with clock frequencies up to 400 kHz. The device features a 128-byte page write buffer, hardware write protection via the WP pin, and extended temperature operation from -40°C to +125°C. It is housed in a 14-lead TSSOP package.

Memory IC Feature Summary

• Supports cascading of up to eight devices on the same bus using functional address lines A0, A1, and A2.
• Includes Schmitt trigger inputs for noise suppression and output slope control to eliminate ground bounce.
• Features hardware write protection that inhibits write operations when the WP pin is tied to VCC.
• Provides high ESD protection exceeding 4000V and data retention capabilities greater than 200 years.

Memory IC Applications

• Personal communications systems requiring low-power non-volatile storage
• Data acquisition applications needing reliable parameter retention
• Industrial control systems operating within extended temperature ranges

Memory IC Procurement Notes

Verify the specific suffix 'E' confirms the Extended temperature range (-40°C to +125°C) and 'ST14' indicates the 14-lead TSSOP package. Confirm RoHS compliance status as required by your manufacturing specifications. Ensure the ordering code matches the exact voltage and interface requirements for your design.

Memory IC Selection Notes

Select this component for designs requiring 512 Kbit capacity with I²C connectivity. The Extended temperature grade is suitable for harsh environments. Consider the 128-byte page write capability for efficient data logging. Verify that the host controller supports the required I²C protocol and voltage levels between 2.5V and 5.5V.

Memory IC Part Context

This part belongs to the 24XX512 family of serial EEPROMs manufactured by Microchip Technology. It shares architectural similarities with the 24AA512 and 24FC512 but differs in voltage range and maximum clock frequency specifications. The 24LC512 variant specifically targets applications requiring operation down to 2.5V.

Memory IC Replacement Considerations

Direct substitutes include other 24LC512 variants with different packages or temperature grades, such as 24LC512-I/ST14 for industrial temperature range. Cross-manufacturer equivalents may exist but require verification of pinout and electrical characteristics.

Memory IC FAQ

How does the hardware write protection function?

The WP pin allows users to write-protect the entire array. When tied to VCC, write operations are inhibited, while read operations remain unaffected. When tied to VSS, write protection is disabled.

What is the maximum number of devices supported on a single bus?

Up to eight 24LC512 devices can be connected to the same bus by configuring the Chip Select bits (A2, A1, and A0) differently for each device.